White Bean Salad with Fresh Tuna Confit

Ingredients

12 cherry tomatoes, halved (or 1 large, firm ripe tomato, diced)

1 cup dried small white beans, such as cannelini or navy, soaked overnight, drained, and cooked in plenty of salted water until done but not mushy (or use two 15-½-oz. cans cooked white beans, thoroughly rinsed and drained)

While the beans are still warm, toss them with the olive oil, vinegar, onion, and scallions. (If you're using canned beans, heat them gently before dressing them.) Allow to cool fully. When cool, fold in the herbs, tuna, and tomatoes, adjusting the vinegar as needed. Season to taste with salt and...